<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" type="text/css" href="style.css">
    <title>Document</title>
    </head>
<body>
     <div id="box">
        <div class="box1">
     <h3>用户登录</h3>
         用户名：<p><input id="username" name="username" type="text"></p>
          密码：<p><input id="password" name="password" type="password"></p>
        <button id="btn" type="button">登录</button>
    </div>
 </div>
 <script src="https://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js">
</script>
 <script src="./index.js"></script>
 </body>
 </html>
